Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Marielly Sierra Mercado, MD

Individual provider Internal Medicine Physician · NPI 1013258482

Marielly Sierra Mercado, MD is an Endocrinology in San Juan, Puerto Rico. Qualified in 2011, 15 years ago. Practices as a sole proprietor. Licensed in Puerto Rico.

Years since qualifying
15
Licensed in
PR
In the registry since
2013
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address may be wrong

The ZIP code does not match the city and state on this record. Call before visiting.

University District Hospital Medical Center Bo Monacillos
San Juan, PR 00935
Phone: (787) 754-0101

No coordinates on file. Search this address in Google Maps

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 19192 (PR)
Internal Medicine Physician Taxonomy 207R00000X · Licence 19192 (PR)

Record details

NPI number1013258482
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 11, 2013
Last updated in NPPESJuly 26, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyENDOCRINOLOGY
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Accepts Medicare assignment Not indicated

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